Online Ruler vs Quick I Ching

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Online Ruler compared with Quick I Ching
Detail	Online Ruler	Quick I Ching
What it does	Free on-screen measuring tools that run in your browser	Free online I Ching hexagram casting and reflection platform
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Freemium
Pricing	Not given	Not given
Key features	Actual-size ruler in cm, mm and inches Bank-card and screen-diagonal calibration Top, left and right rulers with drag-to-measure readout Full-screen mode and browser-zoom warning Image measurement tool Length unit converter Touch dragging support for phones and tablets Local storage of calibration without server uploads	Three-Coin casting method Yarrow Stalk method Mei Hua Yi Shu current-time casting Manual Cast entry Visible casting facts Primary, changing, and relating hexagrams Local browser history storage
What makes it different	Calibration step compensates for browsers' inability to detect physical display size ISO/IEC 7810 ID-1 standard bank card calibration ensures reproducible accuracy All calculations run locally in your browser with no data sent to servers Works on any device with a browser and JavaScript enabled Content follows standards-based principles with no invented precision or fake reviews	Free for all four casting methods with complete interpretation Transparent casting process with visible line values Documented methods preserving traditional conventions Reflective framework, not deterministic prediction
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	2 no change since last check
Trust Flow (Majestic)	2	5
Citation Flow (Majestic)	18	30
Referring domains (Majestic)	10	31

4 details filled in for both companies.

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